.middle > div > div:nth-child(2) > div:first-child {
    display: flex;
    justify-content: center;
    text-align: center;
}

.middle > div > div:nth-child(2) > div:nth-child(2) {
    display: flex;
    justify-content: center;
}

/*留言内容*/
.middle > div > div:nth-child(2) > div:nth-child(2) > div {
    width: 600px;
    /*border: 1px solid rebeccapurple;*/
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div > div:nth-child(1) > div > div:nth-child(1) {
    line-height: 40px;
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div > div:nth-child(1) > div > div:nth-child(2) {
    height: 40px;
    background-color: rgb(238, 238, 238);
    border: 1px dashed red;
    padding: 0 10px;
    line-height: 40px;
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div > div:nth-child(1) > div:nth-child(3) > div:nth-child(2) {
    height: 120px;
    line-height: 30px;
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div > div:nth-child(2) {
    display: flex;
    justify-content: center;
}

.middle > div > div:nth-child(2) > div:nth-child(2) > div > div:nth-child(2) > div {
    background-color: rgb(230, 145, 55);
    color: white;
    cursor: pointer;
    /*width: 200px;*/
    /*text-align: center;*/
    padding: 5px 30px;
    margin: 30px 0;
}